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Newbie question why airbrush hissing

Discussion in 'Troubleshooting!' started by Alex Kahaner, May 21, 2019.


  1. Alex Kahaner

    Alex Kahaner Young Tutorling

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    Hi all
    I'm new to airbrushing I've setup an infinity airbrush with California Air compressor
    I've got a coiled hose with a water filter and regulator and then a 10 floor master braided hose with a quick connector to my infinity brush

    When I connect the brush I hear light hissing of air coming out is that normal?

    Thxs in advance
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  2. AndreZA

    AndreZA Elite Member! Elite Member! Very Likeable!

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    "Coming out" of where? No air should be coming out anywhere if you're not pressing the trigger. Start with no hoses attached. Then the one and then the other. Somewhere is a leak that needs plugging.
  3. Alex Kahaner

    Alex Kahaner Young Tutorling

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    I only hear a small hissing sound once the airbrush is plugged into the quick connect other wise no air is coming out
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  4. Alex Kahaner

    Alex Kahaner Young Tutorling

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    The hissing seems to be coming out of the connection from the AB to the quick connect and or cable not from the AB
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  5. huskystafford

    huskystafford Needle chucking Ninja Very Likeable!

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    remove quick connect and try with out it.
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  6. DaveG

    DaveG Detail Decepticon! Very Likeable!

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    Sounds like your Quick Connect is leaking. If you have more than one male end, the part that attaches to the brush itself, try switching them and see if it does the same thing. Chances are it is the female end that is attached to your air hose, and your only option there is probably to try a different one.
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  7. MarcosD

    MarcosD Mac-Valve Maestro! Very Likeable!

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    I’ve been there, I bought a Sparmax quick connection with mac and never could use it as it has a leak no matter how many quick males I had tried!!
    yes I know I can fix it, but I already had an iwata mac and a quick connect, so...
    What can I say a I’m lazy!!!

    Enviado desde mi iPhone utilizando Tapatalk
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  8. Alex Kahaner

    Alex Kahaner Young Tutorling

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    Is the 2. 7mm quick connect different then a 1/8" quick connect yet they both attach to the airbrush?
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  9. DaveG

    DaveG Detail Decepticon! Very Likeable!

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    Huh? 2.7mm is the approximate size of the through hole in the QC that air passes through. 1/8" BSP is the size of the thread on many airbrush bodies where you connect the air hose. So, this means many air hoses are fitted with an 1/8bps female connector.
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  10. twood

    twood Detail Decepticon! Very Likeable!

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  11. DaveG

    DaveG Detail Decepticon! Very Likeable!

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    odd. I have always written 1/8" as .125"... which is 3.17 mm...
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  12. MarcosD

    MarcosD Mac-Valve Maestro! Very Likeable!

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    You, me and the rest of the world!!!


    Enviado desde mi iPhone utilizando Tapatalk
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  13. AndreZA

    AndreZA Elite Member! Elite Member! Very Likeable!

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    We just round it down. 1/4" = 6mm and 1/8" = 3mm. It's not like you get sizes inbetween.
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  14. twood

    twood Detail Decepticon! Very Likeable!

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    It says on that site that it is rounded off....
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  15. DaveG

    DaveG Detail Decepticon! Very Likeable!

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    I was just kind of fooling around - the references to sizes are for pressure fittings, and I have never understood them. An 1/8" BSP is actually 3/8" x 28tpi. 1/4" is over half inch in size and 19tpi...
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  16. Justin Sane

    Justin Sane Double Actioner

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    Did you lose the o ring? This happened to me once, and it hissed like a muther

    Sent from my SM-N910V using Tapatalk
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  17. Alex Kahaner

    Alex Kahaner Young Tutorling

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    Solved it was a bad quick connect thank u all
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